Brake mechanism for locomotive cranes and the like



A. FRONEK.

BRAKE MECHANISM FOR LOCOMOTIVE CRANES AND THE LIKE.

APPLICATION FILED JUNE 8'1914.

Patented Aug. 1, 1916.

3 SHEETS-SHEET I.

, A. FRONEK.

BRAKE NIECHANISM FOR LOCOMOTIVE CRANES AND THE LIKE.

APPLICATION-FILED IUNE 3 |914.

1*,1 93,006.. Patented Aug. 1, 1916.

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APPLICATION FILED JUNE 8.1914.

Patented Aug. 1, l1916.

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ANTHONY FRONEK, OF CLEVELAND, OHIO, ASSIG-NOR TO THE MCMYLER INTERSTA'IECOMPANY, OF BEDFORD, OHIO, A CORPORATION OF OHIO.

Specification of Letters Patent.

Patented Aug. 1, 1916.

Application led June 8, 1914. i Serial No. 843,604.

To all whom t may cof/wem y Be it known that I, ANTHONY FRONEK, acitizen of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented a certain new and usefulImprovement in Brake Mechanism for Locomotive-Cranes and the like,

`of which the following is a full, clear, and

exact description.

This invention relates to brake mechanism for locomotive cranes andother apparatus having a turntable upon which the main parts of theoperating mechanism are mounted.

The object of the invention is to provide a mechanical brake which canbe conveniently controlled by the operator on the turntable, and whichhas its parts so arranged and mounted that when the turntable is turnedthe crane or other apparatus as a whole will not be moved along thetrack as has been the case heretofore with attempts to apply a brake tosome point of thev driving mechanism near the turntable and with thebrake band anchored or carried by the turntable.

My invention may be briefly summarized as consisting in certain noveldetails of construction and combinations and arrangements of parts whichwill bedescribed in the specification and set forth in the appendedclaims. y

In the accompanying sheets of drawings wherein I have shown thepreferred embodiment of my invention, Figure 1 is a side view o-f thelocomotive crane equipped with my invention, some parts being omittedandv other parts being broken away. Fig. 2 is a plan view of a portionof the turntable. Fig. 3 is a detached view of the brake operatingvmechanism. Fig. 4 is a vertical sectional view through thecranesubstantially along line 1 -4 of Fig. 1. Fig. 5 is an enlarged viewshowing the construction around the pivotal aXis of the turntable and aportion' of the gearing and vertical driving spindle.

by which the crane is propelled along the track, and Fig. 6 is asectional view substantially along the line 6-6 of Fig. 5 lookingupward.

The crane whichis adapted to travel along the track 10 includes wheeledtrucks 11 and a main frame or body 12, which at its top is provided withacircular track 13 on which is a group of rollers or wheels 14supporting a.

turntable 15, which is adapted to be turned or rotated about a verticalaXis. Both the body 12 and the turntable 15 may be of any suitableconstruction, these parts being preferably formed chiefly of structuralmaterial, as shown particularly in Fig. '4.

The turntable carries practically all of the operating mechanism, 4whichincludes a boom 16, a boiler 17, a vcable drum 18 and engines 19, whichthrough suitable transmitting devices are adapted to propel the crane asa whole along the track 10, to rotate the turntable, to shift the boomand raise and lower the load. 'As my invention does not reside in theseparts, the operating mechamsmy is shown in rather conventional manner,and practically all the details not necessary to an understanding Vof myinvention have been omitted.

The locomotive crane is adapted to be propelled along the track throughthe medium of a vertical driving shaft 20, and it is about the axis ofthis shaft that the turntable 15 is adapted to be rotated. The drivingshaft 20 is provided at its upper end with a bevel gear 21 adapted to bedriven by either one of two bevel gears 22 which are mounted on andadapted to be clutched to a shaft23 rotated by the engines. The shaft 20is provided at its lower end with a bevel gear 24.v

which meshes with a bevel gear 25 mounted on a countershaft 26 suitablygeared to one of the truck aXles:

For the purpose of properly supporting the vertical driving shaft 20,and also for effectively centering theturntable the shaft 20 isjournaled ina relatively iXed sleeve, quill, orlbu'shing 27 secured nearits lower end to an annular casting 28 carried by the frame or body 12.A second annular casting y29 is secured to the turntable and has abearing on the sleeve 27 and on the casting 28. V l y To brake the craneso that the same can be held stationary on the track 10, it is notfeasible to .provide brakes which are applied directly to the trackwheels, in view of the fact that the brake operating mechanism must beon a turntable and within convenient reach of the operator at hisstation. It has been proposed to apply the brake to some part of thedriving mechanism, but the best efforts along this line have requiredthat the brake band be carried by or anchored to the turntable, but thishas a serious and in many instances a fatal disadvantage that when theturntable is turned the brake band is turned and when the brake band isin braking engagement with the brake drum rotation` of the band carrieswith it the band engaged part of the driving mechanism, and-this movesthe apparatus as a whole forwardly or rearwardly along the trackdepending upon the direction in which 'the turntable is turned.

In the attainment of the objects of this invention, I utilize a part ofthe driving bevel gear 21 at the top of the driving spindle 20 as abraking surface to be engaged by a brake band, and provide means foranchoring or supporting the band at the upper end of the sleeve 27through which the shaft 20 extends. In the accomplishment of this Iprovide a special gear 21 having a depending annular flange 30 to theouter surface of which a brake band 31l is adapted to be applied. Inorderto support this band on the non-rotating part of the apparatus, Iprovide at the top of the sleeve 27 an annular laterally projectingflange or head 31 to which the band is anchored. The free ends of thebands are connected to pins supported by arms 32a of bell cranks 32mounted on pins 33 supported by and depending from the horizontal head31. Midway between its ends or diametrically opposite the bell cranksthe band is supported by a projection 34 on the head 31.

Although the particular details of the clutch used are immaterial to myinvention in its broad aspects, nevertheless I prefer to employ thebrake mechanism shown in this application in detail. In this brake, themechanism for causing the band to be applied to flange 30 or to bereleased therefrom includes a shifter sleeve 35, which surrounds and isadapted to be moved vertically along the upper portion of the sleeve 27.The mechanism for shifting this sleeve 35 will be explained presently.The sleeve 35 is engaged by the arms of the yoke 36 mounted upon a pin37 supported in lugs 33 depending from the head 31. (See particularlyFig. 6). Pivotally connected between a pair of ears 39 projectingfromthe sleeve of the yoke surrounding the pin 37 is an arm in the form of abolt 40, which projects outwardly from the pin 37 and carries a trunnionblock 41 connected at a central point to a rock arm 42, the free ends ofwhich are connected by rods 43 to the outwardly extending arms 32b ofthe bell cranks 32.

The rock arm 42, which is adapted to be moved outwardly and inwardly bythe endwise movement of the bolt 40, and also is adapted to rock on thetrunnion block 41 is composed of two plates, an upper plate and a lowerplate between which the central trunnion 41 is mounted. The rear ends ofthe lugs 38 project between the plates of this rock arm so as to guidethe same.

It will be observed that the upward movement of the shifter sleeve 35elevates the arms of the yoke 36, and tends to move the rock arm 42inward toward the shaft 20, so as to rock the bell cranks to cause thebrake to be contracted or to be applied, and the lowering of the shiftersleeve 35 tends to move the rock arm 42 outward so as to rock the bellcranks to release the brake. As a matter of fact, the brake is applied or released by a rocking of the rock arm about one end rather than abodily movement inward or outward. rIhe movement of the arms 32b of thebell cranks inward is limited by stop lugs 44 which are adapted to beengaged by pins 44"L carried by the bell crank arms 32b for a purpose tobe described.

The brake shifting mechanism includes certain parts which are carried byand turn with the turntable, said parts including a foot pedal 45, whichwill be at the operators station. rlhis foot pedal is mounted on a shaftconnected by a link 46 to an arm 47 secured to a shaft 48 supported bythe turn table or parts carried thereby, including the casting 29. (SeeFigs. 3 and The inner end of this shaft 48 is provided with a pair ofshifter arms 49 loosely connected to pins projecting from opposite sidesof a shifter ring 50, which is mounted in a groove at the lower end ofthe vertically moving shifter sleeve 35. This ring is loosely mounted inthe groove of the sleeve 35, so that the ring may turn with theturn-table and the brake operating mechanism including the shaft 48 andarms 49.

It will be observed that the principal part of the brake operatingmechanism is carried by the turntable, but when the turntable is turnedregardless of whether the brake is on or off the brake band will not beturned, inasmuch as it is anchored to the non-rotating part of theapparatus.

rlhis brake construction permits the brake to be appliedwithoutrequiring the expenditure of a great deal of power or'energy onthe part of the operator and this is true regardless of the direction inwhich the brake surface or flange 30 may be rotating at the time whenthe brake is applied, for regardless of the fact that neither end of thebrake band is permanently anchored or fastened, the power utilized inapplying the brake will be applied chiefly, if not entirely, to that endof the band which. when shifted will draw the band in the direction thatthe flange 30 is being rotated. For example, when the brake is beingapplied by depressing the foot pedal 45 and elevating the shiftersleeves 35, engagement between the brake band and the rotating flange 30will tend to drag the band around with the latter and will rock one ofthe bell cranks 32 so as to swing its arm 32h inward until the pin 44acarried by said arm engages the corresponding stop lug 44. As soon asthe pin 44 engages the stop lug 44, thus limiting the inward rockingmovement of the one bell crank and anchoring one end of the band, oneend of the rock arm 42 thus becomes fixed and the rock arm is turned orrocked by the brake operating mechanism about said fixed end, causingthe other bell crank to be rocked so as to draw the band in thedirection that the flange 30 is rotating until complete engagement takesplace and the brake is fully applied.

Having thus described my invention, I claim:

l. In a machine of the character described, a frame or body havingwheels adapted to travel along a track, a turntable mounted on saidframe or body for movement about a vertical axis, driving mechanism forpropelling the machine along the track, a brake, including a brakemember adapted to coperate with a part of the driving mechanism andsupported independently of the turntable, and means for operating thebrake comprising a brake operating member supported by the turntable andmechanically connected to said first named brake member.

2. In a machine of the character described, a frame or body having trackwheels adapted to travel along a track, a turntable mounted on saidframe or body, mechanism for propelling the machine including a sourceof power carried by the turntable, a brake comprising a brake memberadapted to coperate with a part of the propelling mechanism andsupported independently of the turntable, means for operating the brake,comprising a brake controlling member carried by the turntable andmechanically connected to said brake member.

3. In a machine of the character described, a frame or body havingwheels adapted to travel along a track, a turntable mounted on saidframe or body for movement about a vertical axis, motive means mountedon said turntable for propelling the car, driving mechanism including avertical shaft for connecting said motive means with track wheels of themachine, and a brake arranged concentrically with respect to said shaftand including a brake member supported independently of the turntable,and mechanism for operating the brake.

4. In a machine of the character described, a frame or body having trackwheels, a turntable mounted on said frame or body for movement about avertical axis, propelling mechanism for said machine mounted on theturntable, and a vertical driving shaft for transmitting power to thetrack wheels, a brake arranged adjacent to the turntable and comprisinga rotary part concentric with respect to said shaft, and a band adaptedto engage said part and supported independently of the turntable, andmechanism for operating the brake.

5. In a machine of the character described, a frame or body having trackwheels, a turntable supported by said frame or body for movement about avertical axis, power mechanism on the turntable for propelling themachine along a track, a shaft connected to said power mechanism and tothe track wheels, a sleeve surrounding the shaft and supported by saidframe or body,

wheels, a turntable supported by said frame or body for movement about avertical axis, power mechanism on the turntable for propelling themachine along a track, a shaft extending upwardly from the frame or bodyand connected to said power mechanism and to the track wheels, a sleevesurrounding the shaft and'supported by and extending upwardly above saidframe or body, a brake for the machine comprising a cylindrical membercarried by the shaft adjacent to the upper end thereof, anda brake bandadapted to engage said cylindrical member and carried by the upper partof said sleeve, both parts of said brake being above the frame or bodyand adjacent to the turntable, and means for controlling the brakecomprising parts rotatable with the turntable.

7. In a machine of the character described, a frame having track wheels,a turntable supported by said frame for movement about a vertical axis,power mechanism on the turntable for propelling the machine along atrack, power transmitting mechanism extending from the turntable to thetrack wheels of said frame, a brake comprising a cylindrical memberrotatable with and connected to the power transmitting mechanism and abrake band adapted to engage said member and supported adjacent theturntable but independently thereof, and mechanism for operating saidband, said mechanism being supported partly by the turntable so as torotate therewith, and partly by the frame.

8. In a machine of the character described, a frame or body and 'aturntable supported by the frame or body and a'dapt- In testimonywhereof, I hereunto a'X my ed to be turned about a vertleal axle, abrake slgnature 1n the presence of two Wltnesses. for the machlnecomprlslng a brake band anchored on a part which is Stationary rela-ANTHONY FRONEL tive to the turntable, and a brake operating Htnesseszmember supported by the turntable and con CMAS. J. MGMYLER,

neoted to the brake band. A. F. KIVTS.

Copies of this patent may be obtained for ve cents each, by addressing*the Commissioner of Patents' Washington, D. C.

